Commercial fishing takes place mainly on the Mississippi, Missouri, and St. Francis rivers. Sport fishing is enjoyed throughout the state, but especially in the Ozarks, whose waters harbor walleye, rainbow trout, bluegill, and largemouth bass. In 1998, Missouri issued 926,357 sport fishing licenses. Fish farms distributed 2.4 million trout, 364,000 catfish, and 484,000 bass within Missouri in 1998 for restoration or conservation purposes.